20117625641143 has 16 divisors (see below), whose sum is σ = 20375002458720. Its totient is φ = 19860611452416.

The previous prime is 20117625641093. The next prime is 20117625641153. The reversal of 20117625641143 is 34114652671102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20117625641143 is a prime.

It is a super-2 number, since 2×20117625641143² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20117625641143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20117625641153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718549621 + ... + 718577617.

It is an arithmetic number, because the mean of its divisors is an integer number (1273437653670).

Almost surely, 2^{20117625641143} is an apocalyptic number.

20117625641143 is a deficient number, since it is larger than the sum of its proper divisors (257376817577).

20117625641143 is a wasteful number, since it uses less digits than its factorization.

20117625641143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34146.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 20117625641143 in words is "twenty trillion, one hundred seventeen billion, six hundred twenty-five million, six hundred forty-one thousand, one hundred forty-three".